kudolph



WINDOW SASH.

Patented May 1,1883.

(Ne Medel.) 3 sheets-'sheet 2.

A. RUDOLPH.

WINDOW sAsH.

No. 276,887. Peteneea Mey 1.1883.

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i UNITED STATES PATENT OFFICE.

ALEXANDER RUDOLPH, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF -TW'O-THIRDS TO J. A.-BECSEY AND T. J. WELSH, OF SAME PLACE.

WnnDow-SASH.y

SPECFICATION forming part of Letters Patent No. 276,887, dated May 1, 1883. Application filed February 27, 1883. (No model.)

To all whom t 'may concern.-

Be it known that I, ALEXANDER RUDOLPH, of the city and county of San Francisco, State of California, have invented `au Improved Window-Sash 5 and I hereby declare the following to be a full, clear, and exact description thereof".

My invention relates to certain improvements in window-sashes of that class in which the frame holding the glass is pivoted in supplemental side barswhich slide up and down in the window-casing; and it consists of a window-sash and supplemental side bars having corresponding longitudinal tongues and grooves to make a. tight joint between them when closed together, in combination with central pivots and supporting center pieces having double-inclined sides. These pieces slide obliquely through slots in metallic plates, which are fixed to the side bars, so t-hat the bars and sash maybe separated when the sash is to be turned, and kept apart by a gravitylever. When this lever is turned to release the parts they are closed together again by the weight of the sash. In connection with these devices are certain novel features of con struction, all of which will be more fully explained by reference to the accompan yin g drawings, in which- Figure l, Sheet 1, is a front view ot' the upper and lower sashes with section of the casing and upper supplemental side bars. Fig. 2, Sheet 2, is an enlarged section ot' part of the casing with the upper sash and one side bar closed and locked together. Fig. 3 is a similar section, showing the har and sash separated. Figs. 4,5, and Gare enlarged views of the inclined center pieces, pivots, and gravity-levers. Figs. 7 and 8, Sheet 3, are enlarged views of the upper part of one of theside bars and the corresponding part of the sash, showing the tongues and grooves, the locking devices, center piece, pivot, and lever.

A A are the sides ot' a window-frame, and B are the window-sashes, which are made enough narrower than the spaces in which they are to slide to admit the narrow guidepieces C to lie between the sash and the frame, and also the plates D, which will be described hereinafter. The guide-pieces and the correspondingmeetin g edges of the sash are tongued and grooved longitudinally, as at a a, so that when drawn close together these tongues and grooves serve to make a tight joint and exclude air. The sashes have plates E iixed in the center ot' their opposite edges, and pivotpins F are fixed to and project from these plates, extending through slots in the guidestrips C, their outer ends being journaled in the plates D, which are of the same Width as the guide-channels, and which extend downward in the grooves in the casing in which the sashes slide.

, When thesash is to be turned upon its pivots for the purpose ot' cleaning the outside of the glass, or for other reasons, it is necessary tirst to move the guides C outward sufficiently to disengage the tongues and groovesul a to allow the sash to turn freely, and the distance between the bottoms of the grooves in the opposite casings is therefore made somewhat greater than the entire width of' the sash and the guides, in order that the guides can be rotracted a sufficient distance from the sashes. This would allo-w an imdesirable'side motion when the sash is to he raised or lowered, and to prevent it the pivot-pins F at the center.,` extending through the plates D, are of sufticient length to just till the space. The plates D extend along the bottoms of the grooves or channels in the casing, there being a space between them and the guides C ,when the latter are in contact with the sash, as shown in Fig. 2. This would still allow the top and bottom of the sash to have a side movement, although the center is steadied by the pivot-pins. I therefore form a lug, G, on the lower end or the plates D, of a sufficient thickness to just touch the guides when they are in contact with the sash, and thus keep the whole steady rEhe guides are separated from the sash,when the latter are to be turned, by means ot rhom` boidal-shaped blocks H, which are perforated to tit loosely upon the pivot-pins F, so that one of their sides rests against theplates E on the 9 sash, while the sides b b forni inclined planes extending `"downward and outward from these sides and passing through beveled slots in the plates I, which are secured to the guide-strips C. As the guide-strips C are supported hy the cords J and counter-weights K, it will be understood that the weight of the sash will cause the lower inclined planes, b', of the blocks H to slide through the beveled openings in the plates I, and thus draw the latter and the guidestrips closely against the sash, where they are held by gravitation alone. The top andhottom of each guide has an angular projection, L, pointing. upward, so as to engage with the corresponding .beveled or inclined openings in the edge of the sash, and these hold the sash and guide-strips tirmly together. When the guidestrips are to be moved outward to allow the sash to be turned upon its pivots F, it is done by holding the sash and drawing the guide-strips downward by means of links or handles M at the bottom, or by other suitable means. When this is done the upper part of the beveled openings in the plates I move down the Lipper inclined surfaces, b, ot' the blocks H, and this forces the guides C away from the edges of the sash, the inclined locking-lugs L at the top and bottom moving outof their sockets in the sash at the same time.

A depression, N, is made in each guidejust above the lug Gr, into which the latter fallsas theguideisdrawn downward and outward, and the guide then lies in contact with the plate D, and is free from the sash, so that the latter may turn upon its pivot F. In order to hold the guides in this position, and also to provide a means for releasing and allowing-'them to again approach the sash, I employ levers O, having two arms at right angles and the pivot or fulcrum at the angle. This pivot-pin secures the lever to the outside of the plate I, so that one arm of the lever projects to the inside of the window within reach, while the other extends vertically downward alongside the block H, where the plates E and I are in contact, as the block H is thick enough to project through the plate I, as shown in Fig. 5. When the guide C is drawn down and the sash separated from it by the action of the incline b', as before described, the plate I moves outward with the guide until the inner end of the leverarm will pass behind the block H and fall into the notch or catch P upon the opposite side, as shown in Fig. 4. The horizontal arm of the lever is heavy enough to cause this action by gravitation as soon as the block H has passed the plane of the lever, and no springs are necessary. There remains only a small `metallic surface ot' contact between the faces of the blocks H and the plates I, and the sash may be readily revolved upon its pivots F. When it is desired to return the guides to close contact with the sash it is only necessary to lit't the exterior end ot' the lever O and withdraw the interior end from the catch P and across the face ot' the block H until it is out of contact with it, as shown in Fig. 6, when the weight of the sash will cause the lower inclined faces, b', of the block H to slip down the beveled notch in the plate I, and thus draw it and the guidesC into contact with the sash, the lugs L at the same time entering the sockets in guides C and the plates, and thus causes the sash to move steadily up or down without side Y play. By this construction I avoid all use of springs. The weight of the sash, acting upon the inclined blocks, draws the sash and guides together and retains them in close contact, while the weight of the horizontal arm ot' the bell-crank lever causes it to act automatically to latch and hold the guides out ot' contact with the sash when they have been thus withdrawn. When this lever is released the weight ofthe sash again draws them into contact.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a window, the sash B, in combination with the independentguide-pieces G, between which it may be held or be allowed to turn, the pivot-pins F, the blocks H, with the inclined faces b b', and plates I, having the beveled slots, said blocks passing through the beveled slots in the plates ofthe guides, so as to draw the guides into contact with the sash or separate them, substantially as herein described.

The combination, with the sash B, having pivot-pins F, passing through the guidestrips C, ot' said guide-strips, having blocks H, with inclined faces, as shown, and inclined lugs L, tting corresponding sockets, and the tongues and grooves aa, substantially as herein described.

3. The sash B, having the pivot-pins F, the guide-strips C, having theplates I, and the blocks H, having the inclined faces, in combination with the bell-crank lever O and the IOS n rated and retained out of contact with the sash or returned to it, substantially as herein described. y

et. The sash B, having pivot-pins F, the guide-strips C, having the plates I, and the inclined blocks H, passing through the slots in the plates I, in combination with the plates D, provided with the lugs G, and the corresponding depressions, N, in the sash, as set forth.

5. In a window having the sash B, turning on pivots within the independent sliding guidestrips, as shown, the means for retaining the sash and guide-strips in or out of contact hy gravitation alone, consisting of the blocks H, with their inclined faces b b', acting within the slotted plates I, and the bell-crank levers 0, pivoted to the plates, and the catches P, substantially as herein described.

In witness whereof I hereunto set my hand.

ALEXANDER RUDOLPH.

Witnesses:

S. H. NoURsE, J. H. BLOOD.

lIO

IIS 

